Here is some information on the "DIY" flush system, parts washer, engine washer, and anything else you can think of! You will need Adobe Acrobat to read the PDF file. Systems are currently available so feel free to ask if you have any questions.
The Pulsator
Hecat Flush System PDF File
Hecat Pulsator Flush Video
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Tim, Just a note. You might wish to check out your image and price page for the in-line Fi"t"ler. I know you want to put your most professional foot forward.
I love your site, THANKS!
(EVEN IF WE DO HAVE A SMALL WAR GOING ON ELSEWHERE) lol
By the way...................where do you suggest it be installed?
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The difference between liberators and conquerors is the liberators go home.
Edited: Wed November 09, 2005 at 6:29 PM by Russell
Got it! With BigChris & you checking my spelling I can sleep at night!!!
We are not at war! I don't think the big guns are needed but do feel the understanding issue will not help much with terrorist!
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Even though you sometimes disagree remember,
A true friend has your back.............always.
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The difference between liberators and conquerors is the liberators go home.
Well thank you!
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Thanks for the heads up. Looks like a pretty cool deal. Just a couple questions. How does it pulsate, and does it come with an adjustable inlet air pressure regulator or would I have to simply add one? (My shop air pressure is about 150 psi-I have to put regulators on alot of stuff.)
Let me know-I may have to order one before next spring if you think it will hold up well. I do about 15-25 flush jobs per season on my taxi fleet. I have been ucing a plain ole flush gun & tons of flush solvent.
The pulsation is the same as in all our flushing equipment, it is created using a patented process that has no moving parts. Specific dimensional passageways controlling "venturi vacuum" and "tank pressure" allow for a momentary pressure drop that produces the pulsating action. Like a controlled "water hammer" effect.
Yes you will need to regulate your line pressure. The max PSI recommended is 90 with a safety pop off set at 100. To reduce the max. blast, the pulsating action will still be present with regulated pressure set as low as 30.
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Cool. Thanks for the reply. One other silly question then I'll leave ya alone. Can it handle lacquer thinner?
Lacquer thinners have many blends that contain chemicals such as Toluene, Naptha, Acetone, Isopropyl Alcohol, Methanol, MEK, etc.
Our standards for approving a chemical for A/C component flushing with our equipment are:
(1) specific gravity less than water (water = 1). A higher specific gravity will diminish the pulsation.
(2) evaporative nature; it has to come out with air purge.
(3) chemical compatibility with A/C and flushing equipment components.
Lacquer thinners rate:
(1) specific gravity is 0.8 and this is good.
(2) highly evaporative product and this is good.
(3) This is where we have encountered a problem.
Lacquer thinner does not have a good chemical rating for Nitrile rubber (Buna N) or PVC. There may be a negative effect on the seals and hoses used in the A/C system and the flushing equipment. Most A/C components will be isolated for flushing so the issue of compatibility with the A/C components is not as much an issue as it is with the components of the flushing equipment.
Although the chemical issue exists, I will not rule out using lacquer thinner for flushing. Because the flush process is followed by an air purge, limiting the long term exposure of the soft components, there may be little or no problems seen. Also, hoses and o-rings are also cheap to replace when and if needed.
The chemicals chosen for use are at the discretion of the technician who must evaluate the positive and negative effects as well as local, state, and federal regulations to guide their decision.
OK, so now you have my official answer. Personally, yes I would use it but be aware of the flammability.
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Thanks, HECAT. I'll have to order one before the next a/c season hits. Has to be better than the 1 qt aluminum flush gun I'm using, and the price is very reasonable. Seems like a can't go wrong deal.
Thanks,
Ben
2006 pre season announcement from Hecat....
Even with the fantastic effort Tim does as a distributor to promote our product, we cannot market this product any better than it can itself. Tim believes in its merit. Why? Trust me at the prices he is reselling to you guys it is not the money. Tim has used our equipment in his shop for many years, enough said.
30 DAY FREE TRIAL: All you need to do is order a Hecat professional pulsating flusher (free trial does not include the DIY Pulsator Flush Gun) of your choice from ACKits.com requesting the free trial. ACKits will hold your credit card info and send us an order to ship your flusher requesting a free trial. Although very unlikely, if you do find you are not satisfied with the product within the first 30 days (you will need the original packaging) then call us directly with your return request. We will issue and fax return shipping documents and cancel the ACKits order and you will be charged nothing by them. We strongly feel that your satisfaction will be found in the simplicity of operation and the effectiveness of the process. Neither of these issues can be fully recognized from any other method other than seeing it for yourself, hands on. This is limited to the US market only, excluding Hawaii, Alaska, and Puerto Rico.
LIMITED LIFETIME WARRANTY: We are so confident in the durability of our equipment that the only way to share this with you is to be willing to stand behind our product and your use for a lifetime. All the same requirements and disclaimers of our standard 1 year warranty will apply with the only qualifying requirement for lifetime warranty is the exclusive use of Hecat Safe-Flush. This lifetime warranty offer is available to all models of Pulsating Flushers.
Thanks to everyone here for sharing all your valuable knowledge...
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With regards to Laquer Thinner - here's my experience and it's an interesting one.....
I tried laquer thinner on aluminum lines ONLY. This is because I know firsthand that it will eat rubber. I thought this was safe but here's an unexpected side affect of using Laquer Thinner.....
When I went to evacuate the system I noticed a strong smell coming from the exhaust of my vacuum pump. It was Laquer Thinner vapor being mixed with the pump oil etc.
What I found was that the pump oil was rapidly destroyed and the pump would not sustain a low micron vacuum after having Laquer Thinner vapors passed through it. It took several hot oil changes to actually get the pump back to spec and this caused me to also wonder what kind of damage those vapors may have done to the pump seals themselves.
My recommendation - as well as Laquer Thinner works - it's not the way to fly for the above mentioned reasons :-)
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Best & Thanks;
Marvin
Marvin,
Thanks for your input and I do agree, it is not the way to fly.
(1) I have pointed out the problems associated with the use of Lacquer Thinner including how it will have a negative effect on the seals of the system and the seals of the flushing equipment.
(2) I definitely have refrained from stating it is an approved flushing chemical by HECAT, it is NOT. By not meeting our compatibility requirement, use of this product will void any machine warranty.
(3) The information I have provided was only to answer those who wish to use it.
As you made no mention of purging, you may or may not see less problems associated with solvents in your vacuum pump, if a generous, 30 minute, high volume, dry air purge, is employed first.
Regardless, the information you have shared is very valuable and the effects solvents will have on a vacuum pump should also be considered when selecting these alternative solvents.
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I've been using isopropyl alcohol 70% as a flush agent followed by a good stream of compressed air. Seems to work well and is environmentally responsible.
Your thoughts?
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Grove Automotive Group, Inc.
An Alabama Corporation
Isopropyl alcohol 70% as a flush......perhaps now would be a good time to check the msds info for this chemical.......70% Isopropyl Alcohol (2-propanol)/CAS# 67-63-0 and the remainder is CAS# 7732-18-5 or more commonly known as Water, Demineralized.
Why add this amount of water to the system.....then expect a vacuum pump to totally remove it......go figure!!!!
Seems as if the search for a more A/C friendly flush would be in order.
Check suppliers MSDS for flush chemicals....find out what is in the systems and the effect of the residual chemicals left after a perhaps...too short air purge.
I see compressors returned for field failures....and more than one can imagine....the odor that escapes from the case is over whelming....the lubricant drained is severely contaminated....just be sure of what is being introduced to these systems.
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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson
I am aware of the chemical makeup of this flush. Yes, it is 30% water. However, I've not had any failures and do force a 10 minute compressed air charge through the flush part, usually an evaporator core.
I've also flushed the old styled condensers in this manner, the type that have a continuous loop.
What's the problem? No failures as of date.
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Grove Automotive Group, Inc.
An Alabama Corporation
Congratulations!!!! If it works....and you are happy with the results.....what more can be said.....a perfect union....a great flush....and never a compressor failure....that formula can not be beat !!!!
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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson
Hi All,
Just got back from automotive madness week in Las Vegas. Sin City on Halloween night; unfortunately I saw things that I did not want to. With a returning flight plane change in Phoenix, I saw some small fires from the air; hope you guys are not going to see some fires like they have been having in CA. Flying into Atlanta, I saw Lake Lanier (Atlanta's aquifer) from the air and it looks worse than it does from my own neighborhood. Freaks, fires, and no water, maybe it is all just going to hell!
Tony 1963,
Alcohol and water?
No disrespect intended and I know it is working for you now, and sometimes we can be very lucky; I would suggest finding something else before it quits working. Remember no comebacks sometimes means the customer has decided "I'll never go back there!"
Neither chemical is friendly to the system and I cannot see how a 10 minute air purge can be effective. We recommend 20-30 minute air purge for products that are much more evaporative, and we base this on solvent remaining weight tests and not just a guess. By the chemical nature of these two products, I would say that 10 minutes may remove the majority of the alcohol but none of the water. That really ends up leaving a lot of water for the vacuum pump to remove, if it can.
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I have read all the material on flushing with HECAT and have purchased the DIY Flusher, fluid, etc. Though I have a question and am rather new at this. Can I filter and reuse the flushing fluid? At $45 a gallon I would like to give it a shot.
You can filter the flush and re-use it a couple times. Here is what I suggest, filter some flush when using it to remove the first stages of flushing. Not reason to use fresh flush just to remove the nasty stuff. Once you think you have the big stuff out use fresh to do your final flushing.
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Filtering and reusing the flush a few times is acceptable, some of the professional models even include features for solvent filtering. This is very subjective to the technicians monitoring of what is coming out. Filtering will only remove debris and not entrapped waste oils. With the professional flushers, we recommend a quick 5 second purge of the majority of waste oils into a waste container before beginning flushing and allowing the return back into the flusher. This extends the number of times it can be filtered and reused. Technicians must also pay attention to severely burnt systems and cross contamination issues when making their decisions to filter again for reuse or to replace.
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